/*
 * The Open Source Unix Installer
 *
 * The MIT License
 *
 * Copyright 2011-2012 Andrey Pudov.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */

/*
 * A logger is used to log messages for a specific component. 
 * @author  Andrey Pudov    <andrey@andreypudov.com>
 * @version 0.00.00
 * @name    logger.h
 * @date:   Jan 16, 2012
 */

#ifndef INSTALLER_UTIL_LOGGER_H_
#define INSTALLER_UTIL_LOGGER_H_

#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>

#ifdef __cplusplus
extern "C" {
#endif

/* standard logging levels that can be used to control logging output */
typedef enum {
    SEVERE, /* highest value */
    WARNING,
    INFO,
    CONFIG,
    FINE,
    FINER,
    FINEST /* lowest value */
} Level;

typedef struct _Logger Logger;

struct _Logger {
    FILE *file_pointer;
};

/* creates a new logger (file_name can be NULL) */
Logger* installer_logger_new(FILE *descriptor);
void    installer_logger_delete(Logger *logger);

/* write a message to log */
void installer_logger_log(Logger *logger, Level level, const char *component, 
                          const char *message);

#ifdef __cplusplus
}
#endif

#endif /* INSTALLER_UTIL_LOGGER_H_ */
